User-Agent Parser

Parse a User-Agent string into browser, OS, and device details.

User-Agent string

Load a sample

Parsed JSON

{
  "browser": {
    "name": "Chrome",
    "version": "131.0.0.0",
    "major": "131",
    "type": null
  },
  "engine": {
    "name": "Blink",
    "version": "131.0.0.0"
  },
  "os": {
    "name": "Windows",
    "version": "10"
  },
  "device": {
    "type": "desktop",
    "vendor": null,
    "model": null
  },
  "cpu": {
    "architecture": "amd64"
  }
}

Browser: Chrome 131.0.0.0
Browser type: —
Engine: Blink 131.0.0.0
Operating system: Windows 10
Device type: desktop
Device vendor: —
Device model: —
CPU architecture: amd64

Parsing happens locally with UAParser.js. User-Agent strings are self-reported and increasingly frozen by browsers, so treat the result as a hint rather than proof — prefer feature detection or Client Hints for behaviour decisions.

User-Agent Parser

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